1 # SPDX-License-Identifier: GPL-2.0-only
3 # GPIO infrastructure and drivers
6 config ARCH_HAVE_CUSTOM_GPIO_H
9 Selecting this config option from the architecture Kconfig allows
10 the architecture to provide a custom asm/gpio.h implementation
11 overriding the default implementations. New uses of this are
17 This enables GPIO support through the generic GPIO library.
18 You only need to enable this, if you also want to enable
19 one or more of the GPIO drivers below.
25 config GPIOLIB_FASTPATH_LIMIT
26 int "Maximum number of GPIOs for fast path"
30 This adjusts the point at which certain APIs will switch from
31 using a stack allocated buffer to a dynamically allocated buffer.
33 You shouldn't need to change this unless you really need to
34 optimize either stack space or performance. Change this carefully
35 since setting an incorrect value could cause stack corruption.
46 config GPIOLIB_IRQCHIP
51 bool "Debug GPIO calls"
52 depends on DEBUG_KERNEL
54 Say Y here to add some extra checks and diagnostics to GPIO calls.
55 These checks help ensure that GPIOs have been properly initialized
56 before they are used, and that sleeping calls are not made from
57 non-sleeping contexts. They can make bitbanged serial protocols
58 slower. The diagnostics help catch the type of setup errors
59 that are most common when setting up new platforms or boards.
62 bool "/sys/class/gpio/... (sysfs interface)" if EXPERT
64 select GPIO_CDEV # We need to encourage the new ABI
66 Say Y here to add the legacy sysfs interface for GPIOs.
68 This ABI is deprecated. If you want to use GPIO from userspace,
69 use the character device /dev/gpiochipN with the appropriate
70 ioctl() operations instead.
74 prompt "Character device (/dev/gpiochipN) support" if EXPERT
77 Say Y here to add the character device /dev/gpiochipN interface
78 for GPIOs. The character device allows userspace to control GPIOs
79 using ioctl() operations.
81 Only say N if you are sure that the GPIO character device is not
87 bool "Support GPIO ABI Version 1"
91 Say Y here to support version 1 of the GPIO CDEV ABI.
93 This ABI version is deprecated.
94 Please use the latest ABI for new developments.
99 depends on HAS_IOMEM # Only for IOMEM drivers
106 # put drivers in the right section, in alphabetical order
108 # This symbol is selected by both I2C and SPI expanders
112 menu "Memory mapped GPIO drivers"
115 config GPIO_74XX_MMIO
116 tristate "GPIO driver for 74xx-ICs with MMIO access"
120 Say yes here to support GPIO functionality for 74xx-compatible ICs
121 with MMIO access. Compatible models include:
122 1 bit: 741G125 (Input), 741G74 (Output)
123 2 bits: 742G125 (Input), 7474 (Output)
124 4 bits: 74125 (Input), 74175 (Output)
125 6 bits: 74365 (Input), 74174 (Output)
126 8 bits: 74244 (Input), 74273 (Output)
127 16 bits: 741624 (Input), 7416374 (Output)
130 tristate "Altera GPIO"
132 select GPIOLIB_IRQCHIP
134 Say Y or M here to build support for the Altera PIO device.
136 If driver is built as a module it will be called gpio-altera.
139 tristate "AMD Promontory GPIO support"
143 driver for GPIO functionality on Promontory IOHub
144 Require ACPI ASL code to enumerate as a platform device.
147 tristate "Aspeed GPIO support"
148 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
149 select GPIOLIB_IRQCHIP
151 Say Y here to support Aspeed AST2400 and AST2500 GPIO controllers.
153 config GPIO_ASPEED_SGPIO
154 bool "Aspeed SGPIO support"
155 depends on (ARCH_ASPEED || COMPILE_TEST) && OF_GPIO
157 select GPIOLIB_IRQCHIP
159 Say Y here to support Aspeed AST2500 SGPIO functionality.
162 tristate "Atheros AR71XX/AR724X/AR913X GPIO support"
164 depends on ATH79 || COMPILE_TEST
166 select GPIOLIB_IRQCHIP
168 Select this option to enable GPIO driver for
169 Atheros AR71XX/AR724X/AR913X SoC devices.
171 config GPIO_RASPBERRYPI_EXP
172 tristate "Raspberry Pi 3 GPIO Expander"
173 default RASPBERRYPI_FIRMWARE
175 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
176 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
177 depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
179 Turn on GPIO support for the expander on Raspberry Pi 3 boards, using
180 the firmware mailbox to communicate with VideoCore on BCM283x chips.
183 bool "Broadcom Kona GPIO"
184 depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
186 Turn on GPIO support for Broadcom "Kona" chips.
188 config GPIO_BCM_XGS_IPROC
189 tristate "BRCM XGS iProc GPIO support"
190 depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
192 select GPIOLIB_IRQCHIP
193 default ARCH_BCM_IPROC
195 Say yes here to enable GPIO support for Broadcom XGS iProc SoCs.
198 tristate "BRCMSTB GPIO support"
199 default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
200 depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST)
204 Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs.
207 tristate "Cadence GPIO support"
210 select GPIOLIB_IRQCHIP
212 Say yes here to enable support for Cadence GPIO controller.
215 tristate "CLPS711X GPIO support"
216 depends on ARCH_CLPS711X || COMPILE_TEST
219 Say yes here to support GPIO on CLPS711X SoCs.
222 bool "TI Davinci/Keystone GPIO support"
223 default y if ARCH_DAVINCI
224 depends on (ARM || ARM64) && (ARCH_DAVINCI || ARCH_KEYSTONE || ARCH_K3)
226 Say yes here to enable GPIO support for TI Davinci/Keystone SoCs.
229 tristate "Synopsys DesignWare APB GPIO driver"
231 select GPIOLIB_IRQCHIP
233 Say Y or M here to build support for the Synopsys DesignWare APB
237 tristate "Spreadtrum EIC support"
238 depends on ARCH_SPRD || COMPILE_TEST
240 select GPIOLIB_IRQCHIP
242 Say yes here to support Spreadtrum EIC device.
245 tristate "Emma Mobile GPIO"
246 depends on (ARCH_EMEV2 || COMPILE_TEST) && OF_GPIO
248 Say yes here to support GPIO on Renesas Emma Mobile SoCs.
252 depends on ARCH_EP93XX
254 select GPIOLIB_IRQCHIP
257 tristate "Support for GPIO pins on XR17V352/354/358"
258 depends on SERIAL_8250_EXAR
261 Selecting this option will enable handling of GPIO pins present
262 on Exar XR17V352/354/358 chips.
265 bool "GE FPGA based GPIO"
269 Support for common GPIO functionality provided on some GE Single Board
272 This driver provides basic support (configure as input or output, read
273 and write pin state) for GPIO implemented in a number of GE single
276 config GPIO_FTGPIO010
277 bool "Faraday FTGPIO010 GPIO"
280 select GPIOLIB_IRQCHIP
281 default (ARCH_GEMINI || ARCH_MOXART)
283 Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
284 Cortina systems Gemini platforms, Moxa ART and others.
286 config GPIO_GENERIC_PLATFORM
287 tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"
290 Say yes here to support basic platform_device memory-mapped GPIO controllers.
293 tristate "Aeroflex Gaisler GRGPIO support"
298 Select this to support Aeroflex Gaisler GRGPIO cores from the GRLIB
299 VHDL IP core library.
302 tristate "HiSilicon GPIO controller driver"
303 depends on (ARM64 && ACPI) || COMPILE_TEST
305 select GPIOLIB_IRQCHIP
307 Say Y or M here to build support for the HiSilicon GPIO controller
309 This GPIO controller support double-edge interrupt and multi-core
313 tristate "Nintendo Wii (Hollywood) GPIO"
316 select GPIOLIB_IRQCHIP
318 Select this to support the GPIO controller of the Nintendo Wii.
323 tristate "Intel ICH GPIO"
327 Say yes here to support the GPIO functionality of a number of Intel
328 ICH-based chipsets. Currently supported devices: ICH6, ICH7, ICH8
329 ICH9, ICH10, Series 5/3400 (eg Ibex Peak), Series 6/C200 (eg
330 Cougar Point), NM10 (Tiger Point), and 3100 (Whitmore Lake).
335 tristate "Intel IOP GPIO"
336 depends on ARCH_IOP32X || COMPILE_TEST
339 Say yes here to support the GPIO functionality of a number of Intel
345 bool "Intel IXP4xx GPIO"
346 depends on ARM # For <asm/mach-types.h>
347 depends on ARCH_IXP4XX
349 select GPIOLIB_IRQCHIP
350 select IRQ_DOMAIN_HIERARCHY
352 Say yes here to support the GPIO functionality of a number of Intel
353 IXP4xx series of chips.
357 tristate "Xylon LogiCVC GPIO support"
358 depends on MFD_SYSCON && OF
360 Say yes here to support GPIO functionality of the Xylon LogiCVC
361 programmable logic block.
364 bool "Loongson-2/3 GPIO support"
365 depends on CPU_LOONGSON2EF || CPU_LOONGSON64
367 driver for GPIO functionality on Loongson-2F/3A/3B processors.
370 tristate "NXP LPC18XX/43XX GPIO support"
371 default y if ARCH_LPC18XX
372 depends on OF_GPIO && (ARCH_LPC18XX || COMPILE_TEST)
373 select IRQ_DOMAIN_HIERARCHY
375 Select this option to enable GPIO driver for
376 NXP LPC18XX/43XX devices.
379 tristate "NXP LPC32XX GPIO support"
380 depends on OF_GPIO && (ARCH_LPC32XX || COMPILE_TEST)
382 Select this option to enable GPIO driver for
386 tristate "GPIO support for Fujitsu MB86S7x Platforms"
388 Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
391 tristate "MEN 16Z127 GPIO support"
395 Say yes here to support the MEN 16Z127 GPIO Controller
397 config GPIO_MM_LANTIQ
398 bool "Lantiq Memory mapped GPIOs"
399 depends on LANTIQ && SOC_XWAY
401 This enables support for memory mapped GPIOs on the External Bus Unit
402 (EBU) found on Lantiq SoCs. The gpios are output only as they are
403 created by attaching a 16bit latch to the bus.
407 depends on PPC_MPC52xx
410 bool "MPC512x/MPC8xxx/QorIQ GPIO support"
411 depends on PPC_MPC512x || PPC_MPC831x || PPC_MPC834x || PPC_MPC837x || \
412 FSL_SOC_BOOKE || PPC_86xx || ARCH_LAYERSCAPE || ARM || \
417 Say Y here if you're going to use hardware that connects to the
418 MPC512x/831x/834x/837x/8572/8610/QorIQ GPIOs.
421 bool "Mediatek MT7621 GPIO Support"
422 depends on SOC_MT7620 || SOC_MT7621 || COMPILE_TEST
425 select GPIOLIB_IRQCHIP
427 Say yes here to support the Mediatek MT7621 SoC GPIO device
431 depends on PLAT_ORION || ARCH_MVEBU
433 select GENERIC_IRQ_CHIP
437 tristate "i.MX GPIO support"
438 depends on ARCH_MXC || COMPILE_TEST
440 select GENERIC_IRQ_CHIP
443 bool "Freescale MXS GPIO support" if COMPILE_TEST
444 depends on ARCH_MXS || COMPILE_TEST
445 default y if ARCH_MXS
447 select GENERIC_IRQ_CHIP
450 tristate "Cavium OCTEON GPIO"
451 depends on CAVIUM_OCTEON_SOC
454 Say yes here to support the on-chip GPIO lines on the OCTEON
458 tristate "TI OMAP GPIO support" if ARCH_OMAP2PLUS || COMPILE_TEST
459 default y if ARCH_OMAP
461 select GENERIC_IRQ_CHIP
462 select GPIOLIB_IRQCHIP
464 Say yes here to enable GPIO support for TI OMAP SoCs.
467 tristate "PrimeCell PL061 GPIO support"
470 select GPIOLIB_IRQCHIP
472 Say yes here to support the PrimeCell PL061 GPIO device
474 config GPIO_PMIC_EIC_SPRD
475 tristate "Spreadtrum PMIC EIC support"
476 depends on MFD_SC27XX_PMIC || COMPILE_TEST
478 select GPIOLIB_IRQCHIP
480 Say yes here to support Spreadtrum PMIC EIC device.
483 bool "PXA GPIO support"
484 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
486 Say yes here to support the PXA GPIO device
489 tristate "Renesas R-Car and RZ/G GPIO support"
490 depends on ARCH_RENESAS || COMPILE_TEST
491 select GPIOLIB_IRQCHIP
493 Say yes here to support GPIO on Renesas R-Car or RZ/G SoCs.
496 bool "RDA Micro GPIO controller support"
497 depends on ARCH_RDA || COMPILE_TEST
500 select GPIOLIB_IRQCHIP
502 Say Y here to support RDA Micro GPIO controller.
504 config GPIO_REALTEK_OTTO
505 tristate "Realtek Otto GPIO support"
506 depends on MACH_REALTEK_RTL
507 default MACH_REALTEK_RTL
509 select GPIOLIB_IRQCHIP
511 The GPIO controller on the Otto MIPS platform supports up to two
512 banks of 32 GPIOs, with edge triggered interrupts. The 32 GPIOs
513 are grouped in four 8-bit wide ports.
515 When built as a module, the module will be called realtek_otto_gpio.
520 A 32-bit single register GPIO fixed in/out implementation. This
521 can be used to represent any register as a set of GPIO signals.
524 tristate "Rockchip GPIO support"
525 depends on ARCH_ROCKCHIP || COMPILE_TEST
526 select GPIOLIB_IRQCHIP
527 default ARCH_ROCKCHIP
529 Say yes here to support GPIO on Rockchip SoCs.
531 config GPIO_SAMA5D2_PIOBU
532 tristate "SAMA5D2 PIOBU GPIO support"
533 depends on MFD_SYSCON
537 Say yes here to use the PIOBU pins as GPIOs.
539 PIOBU pins on the SAMA5D2 can be used as GPIOs.
540 The difference from regular GPIOs is that they
541 maintain their value during backup/self-refresh.
544 bool "SiFive GPIO support"
546 select IRQ_DOMAIN_HIERARCHY
548 select GPIOLIB_IRQCHIP
551 Say yes here to support the GPIO device on SiFive SoCs.
552 config GPIO_STARFIVE_JH7110
553 bool "Starfive JH7110 GPIO support"
554 depends on SOC_STARFIVE_JH7110
556 select GPIOLIB_IRQCHIP
558 Say yes here to support the GPIO device on Starfive VIC7110 SoCs.
561 tristate "SIOX GPIO support"
563 select GPIOLIB_IRQCHIP
565 Say yes here to support SIOX I/O devices. These are units connected
566 via a SIOX bus and have a number of fixed-direction I/O lines.
568 config GPIO_SNPS_CREG
569 bool "Synopsys GPIO via CREG (Control REGisters) driver"
570 depends on ARC || COMPILE_TEST
573 This driver supports GPIOs via CREG on various Synopsys SoCs.
574 This is a single-register MMIO GPIO driver for complex cases
575 where only several fields in register belong to GPIO lines and
576 each GPIO line owns a field with different length and on/off value.
578 config GPIO_SPEAR_SPICS
579 bool "ST SPEAr13xx SPI Chip Select as GPIO support"
580 depends on PLAT_SPEAR
581 select GENERIC_IRQ_CHIP
583 Say yes here to support ST SPEAr SPI Chip Select as GPIO device
586 tristate "Spreadtrum GPIO support"
587 depends on ARCH_SPRD || COMPILE_TEST
589 select GPIOLIB_IRQCHIP
591 Say yes here to support Spreadtrum GPIO device.
594 bool "STA2x11/ConneXt GPIO support"
595 depends on MFD_STA2X11
596 select GENERIC_IRQ_CHIP
598 Say yes here to support the STA2x11/ConneXt GPIO device.
599 The GPIO module has 128 GPIO pins with alternate functions.
602 bool "XWAY STP GPIOs"
603 depends on SOC_XWAY || COMPILE_TEST
606 This enables support for the Serial To Parallel (STP) unit found on
607 XWAY SoC. The STP allows the SoC to drive a shift registers cascade,
608 that can be up to 24 bit. This peripheral is aimed at driving leds.
609 Some of the gpios/leds can be auto updated by the soc with dsl and
613 tristate "GPIO based on SYSCON"
614 depends on MFD_SYSCON && OF
616 Say yes here to support GPIO functionality though SYSCON driver.
621 select GENERIC_IRQ_CHIP
625 tristate "NVIDIA Tegra GPIO support"
627 depends on ARCH_TEGRA || COMPILE_TEST
629 select GPIOLIB_IRQCHIP
630 select IRQ_DOMAIN_HIERARCHY
632 Say yes here to support GPIO pins on NVIDIA Tegra SoCs.
635 tristate "NVIDIA Tegra186 GPIO support"
636 default ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC
637 depends on ARCH_TEGRA_186_SOC || ARCH_TEGRA_194_SOC || COMPILE_TEST
639 select GPIOLIB_IRQCHIP
640 select IRQ_DOMAIN_HIERARCHY
642 Say yes here to support GPIO pins on NVIDIA Tegra186 SoCs.
645 tristate "TS-4800 DIO blocks and compatibles"
647 depends on SOC_IMX51 || COMPILE_TEST
650 This driver support TS-4800 FPGA GPIO controllers.
653 tristate "Cavium ThunderX/OCTEON-TX GPIO"
654 depends on ARCH_THUNDER || (64BIT && COMPILE_TEST)
656 select GPIOLIB_IRQCHIP
657 select IRQ_DOMAIN_HIERARCHY
658 select IRQ_FASTEOI_HIERARCHY_HANDLERS
660 Say yes here to support the on-chip GPIO lines on the ThunderX
661 and OCTEON-TX families of SoCs.
664 tristate "UniPhier GPIO support"
665 depends on ARCH_UNIPHIER || COMPILE_TEST
667 select IRQ_DOMAIN_HIERARCHY
669 Say yes here to support UniPhier GPIOs.
673 depends on ARCH_MXC && SOC_VF610
674 select GPIOLIB_IRQCHIP
676 Say yes here to support Vybrid vf610 GPIOs.
679 tristate "Toshiba Visconti GPIO support"
680 depends on ARCH_VISCONTI || COMPILE_TEST
682 select GPIOLIB_IRQCHIP
684 select IRQ_DOMAIN_HIERARCHY
686 Say yes here to support GPIO on Tohisba Visconti.
689 tristate "NEC VR4100 series General-purpose I/O Uint support"
690 depends on CPU_VR41XX
692 Say yes here to support the NEC VR4100 series General-purpose I/O Uint
695 tristate "VIA VX855/VX875 GPIO"
696 depends on (X86 || COMPILE_TEST) && PCI
700 Support access to the VX855/VX875 GPIO lines through the gpio library.
702 This driver provides common support for accessing the device,
703 additional drivers must be enabled in order to use the
704 functionality of the device.
707 tristate "Qualcomm Technologies Inc WCD9340/WCD9341 gpio controller driver"
708 depends on MFD_WCD934X && OF_GPIO
710 This driver is to support GPIO block found on the Qualcomm Technologies
711 Inc WCD9340/WCD9341 Audio Codec.
714 bool "APM X-Gene GPIO controller support"
715 depends on ARM64 && OF_GPIO
717 This driver is to support the GPIO block within the APM X-Gene SoC
718 platform's generic flash controller. The GPIO pins are muxed with
719 the generic flash controller's address and data pins. Say yes
720 here to enable the GFC GPIO functionality.
723 tristate "APM X-Gene GPIO standby controller support"
724 depends on (ARCH_XGENE || COMPILE_TEST)
726 select GPIOLIB_IRQCHIP
727 select IRQ_DOMAIN_HIERARCHY
729 This driver supports the GPIO block within the APM X-Gene
730 Standby Domain. Say yes here to enable the GPIO functionality.
733 tristate "Xilinx GPIO support"
734 select GPIOLIB_IRQCHIP
737 Say yes here to support the Xilinx FPGA GPIO device
740 tristate "Netlogic XLP GPIO support"
741 depends on OF_GPIO && (CPU_XLP || ARCH_THUNDER2 || COMPILE_TEST)
742 select GPIOLIB_IRQCHIP
744 This driver provides support for GPIO interface on Netlogic XLP MIPS64
745 SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX,
746 XLP9XX and XLP5XX. The same GPIO controller block is also present in
747 Cavium's ThunderX2 CN99XX SoCs.
752 bool "Xtensa GPIO32 support"
754 depends on HAVE_XTENSA_GPIO32
757 Say yes here to support the Xtensa internal GPIO32 IMPWIRE (input)
758 and EXPSTATE (output) ports
761 bool "LSI ZEVIO SoC memory mapped GPIOs"
762 depends on ARM && OF_GPIO
764 Say yes here to support the GPIO controller in LSI ZEVIO SoCs.
767 tristate "Xilinx Zynq GPIO support"
768 depends on ARCH_ZYNQ || ARCH_ZYNQMP
769 select GPIOLIB_IRQCHIP
771 Say yes here to support Xilinx Zynq GPIO controller.
773 config GPIO_LOONGSON1
774 tristate "Loongson1 GPIO support"
775 depends on MACH_LOONGSON32
778 Say Y or M here to support GPIO on Loongson1 SoCs.
781 tristate "GPIO support for AMD Fusion Controller Hub (G-series SOCs)"
783 This option enables driver for GPIO on AMDs Fusion Controller Hub,
784 as found on G-series SOCs (eg. GX-412TC)
786 Note: This driver doesn't registers itself automatically, as it
787 needs to be provided with platform specific configuration.
788 (See eg. CONFIG_PCENGINES_APU2.)
791 bool "MStar MSC313 GPIO support"
792 depends on ARCH_MSTARV7
794 select GPIOLIB_IRQCHIP
795 select IRQ_DOMAIN_HIERARCHY
797 Say Y here to support the main GPIO block on MStar/SigmaStar
801 tristate "IDT 79RC3243X GPIO support"
802 depends on MIKROTIK_RB532 || COMPILE_TEST
804 select GPIOLIB_IRQCHIP
806 Select this option to enable GPIO driver for
807 IDT 79RC3243X based devices like Mikrotik RB532.
809 To compile this driver as a module, choose M here: the module will
810 be called gpio-idt3243x.
814 menu "Port-mapped I/O GPIO drivers"
815 depends on X86 # Unconditional I/O space access
817 config GPIO_104_DIO_48E
818 tristate "ACCES 104-DIO-48E GPIO support"
821 select GPIOLIB_IRQCHIP
823 Enables GPIO support for the ACCES 104-DIO-48E series (104-DIO-48E,
824 104-DIO-24E). The base port addresses for the devices may be
825 configured via the base module parameter. The interrupt line numbers
826 for the devices may be configured via the irq module parameter.
828 config GPIO_104_IDIO_16
829 tristate "ACCES 104-IDIO-16 GPIO support"
832 select GPIOLIB_IRQCHIP
834 Enables GPIO support for the ACCES 104-IDIO-16 family (104-IDIO-16,
835 104-IDIO-16E, 104-IDO-16, 104-IDIO-8, 104-IDIO-8E, 104-IDO-8). The
836 base port addresses for the devices may be configured via the base
837 module parameter. The interrupt line numbers for the devices may be
838 configured via the irq module parameter.
840 config GPIO_104_IDI_48
841 tristate "ACCES 104-IDI-48 GPIO support"
844 select GPIOLIB_IRQCHIP
846 Enables GPIO support for the ACCES 104-IDI-48 family (104-IDI-48A,
847 104-IDI-48AC, 104-IDI-48B, 104-IDI-48BC). The base port addresses for
848 the devices may be configured via the base module parameter. The
849 interrupt line numbers for the devices may be configured via the irq
853 tristate "F71869, F71869A, F71882FG, F71889F and F81866 GPIO support"
855 This option enables support for GPIOs found on Fintek Super-I/O
856 chips F71869, F71869A, F71882FG, F71889F and F81866.
858 To compile this driver as a module, choose M here: the module will
859 be called f7188x-gpio.
862 tristate "Diamond Systems GPIO-MM GPIO support"
866 Enables GPIO support for the Diamond Systems GPIO-MM and GPIO-MM-12.
868 The Diamond Systems GPIO-MM device features 48 lines of digital I/O
869 via the emulation of dual 82C55A PPI chips. This driver provides GPIO
870 support for these 48 channels of digital I/O.
872 The base port addresses for the devices may be configured via the base
873 array module parameter.
876 tristate "IT87xx GPIO support"
878 Say yes here to support GPIO functionality of IT87xx Super I/O chips.
880 This driver is tested with ITE IT8728 and IT8732 Super I/O chips, and
881 supports the IT8761E, IT8613, IT8620E, and IT8628E Super I/O chips as
884 To compile this driver as a module, choose M here: the module will
888 tristate "Intel SCH/TunnelCreek/Centerton/Quark X1000 GPIO"
889 depends on (X86 || COMPILE_TEST) && ACPI
891 select GPIOLIB_IRQCHIP
893 Say yes here to support GPIO interface on Intel Poulsbo SCH,
894 Intel Tunnel Creek processor, Intel Centerton processor or
895 Intel Quark X1000 SoC.
897 The Intel SCH contains a total of 14 GPIO pins. Ten GPIOs are
898 powered by the core power rail and are turned off during sleep
899 modes (S3 and higher). The remaining four GPIOs are powered by
900 the Intel SCH suspend power supply. These GPIOs remain
901 active during S3. The suspend powered GPIOs can be used to wake the
902 system from the Suspend-to-RAM state.
904 The Intel Tunnel Creek processor has 5 GPIOs powered by the
905 core power rail and 9 from suspend power supply.
907 The Intel Centerton processor has a total of 30 GPIO pins.
908 Twenty-one are powered by the core power rail and 9 from the
909 suspend power supply.
911 The Intel Quark X1000 SoC has 2 GPIOs powered by the core
912 power well and 6 from the suspend power well.
915 tristate "SMSC SCH311x SuperI/O GPIO"
917 Driver to enable the GPIOs found on SMSC SMSC SCH3112, SCH3114 and
918 SCH3116 "Super I/O" chipsets.
920 To compile this driver as a module, choose M here: the module will
921 be called gpio-sch311x.
924 tristate "TS-5500 DIO blocks and compatibles"
925 depends on TS5500 || COMPILE_TEST
927 This driver supports Digital I/O exposed by pin blocks found on some
928 Technologic Systems platforms. It includes, but is not limited to, 3
929 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600
933 tristate "Winbond Super I/O GPIO support"
936 This option enables support for GPIOs found on Winbond Super I/O
938 Currently, only W83627UHG (also known as Nuvoton NCT6627UD) is
941 You will need to provide a module parameter "gpios", or a
942 boot-time parameter "gpio_winbond.gpios" with a bitmask of GPIO
943 ports to enable (bit 0 is GPIO1, bit 1 is GPIO2, etc.).
945 To compile this driver as a module, choose M here: the module will
946 be called gpio-winbond.
949 tristate "WinSystems WS16C48 GPIO support"
951 select GPIOLIB_IRQCHIP
953 Enables GPIO support for the WinSystems WS16C48. The base port
954 addresses for the devices may be configured via the base module
955 parameter. The interrupt line numbers for the devices may be
956 configured via the irq module parameter.
960 menu "I2C GPIO expanders"
964 tristate "ADP5588 I2C GPIO expander"
966 This option enables support for 18 GPIOs found
967 on Analog Devices ADP5588 GPIO Expanders.
969 config GPIO_ADP5588_IRQ
970 bool "Interrupt controller support for ADP5588"
971 depends on GPIO_ADP5588=y
972 select GPIOLIB_IRQCHIP
974 Say yes here to enable the adp5588 to be used as an interrupt
975 controller. It requires the driver to be built in the kernel.
978 tristate "Avionic Design N-bit GPIO expander"
980 select GPIOLIB_IRQCHIP
982 This option enables support for N GPIOs found on Avionic Design
983 I2C GPIO expanders. The register space will be extended by powers
984 of two, so the controller will need to accommodate for that. For
985 example: if a controller provides 48 pins, 6 registers will be
986 enough to represent all pins, but the driver will assume a
987 register layout for 64 pins (8 registers).
990 tristate "Gateworks PLD GPIO Expander"
993 Say yes here to provide access to the Gateworks I2C PLD GPIO
994 Expander. This is used at least on the Cambria GW2358-4.
997 tristate "Maxim MAX7300 GPIO expander"
1000 GPIO driver for Maxim MAX7300 I2C-based GPIO expander.
1003 tristate "MAX7319, MAX7320-7327 I2C Port Expanders"
1005 Say yes here to support the MAX7319, MAX7320-7327 series of I2C
1006 Port Expanders. Each IO port on these chips has a fixed role of
1007 Input (designated by 'I'), Push-Pull Output ('O'), or Open-Drain
1008 Input and Output (designed by 'P'). The combinations are listed
1011 8 bits: max7319 (8I), max7320 (8O), max7321 (8P),
1012 max7322 (4I4O), max7323 (4P4O)
1014 16 bits: max7324 (8I8O), max7325 (8P8O),
1015 max7326 (4I12O), max7327 (4P12O)
1017 Board setup code must specify the model to use, and the start
1018 number for these GPIOs.
1020 config GPIO_MAX732X_IRQ
1021 bool "Interrupt controller support for MAX732x"
1022 depends on GPIO_MAX732X=y
1023 select GPIOLIB_IRQCHIP
1025 Say yes here to enable the max732x to be used as an interrupt
1026 controller. It requires the driver to be built in the kernel.
1029 tristate "PCA95[357]x, PCA9698, TCA64xx, and MAX7310 I/O ports"
1032 Say yes here to provide access to several register-oriented
1033 SMBus I/O expanders, made mostly by NXP or TI. Compatible
1036 4 bits: pca9536, pca9537
1038 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554,
1039 pca9556, pca9557, pca9574, tca6408, tca9554, xra1202
1041 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575,
1046 40 bits: pca9505, pca9698
1048 config GPIO_PCA953X_IRQ
1049 bool "Interrupt controller support for PCA953x"
1050 depends on GPIO_PCA953X
1051 select GPIOLIB_IRQCHIP
1053 Say yes here to enable the pca953x to be used as an interrupt
1054 controller. It requires the driver to be built in the kernel.
1057 tristate "PCA9570 4-Bit I2C GPO expander"
1059 Say yes here to enable the GPO driver for the NXP PCA9570 chip.
1061 To compile this driver as a module, choose M here: the module will
1062 be called gpio-pca9570.
1065 tristate "PCF857x, PCA{85,96}7x, and MAX732[89] I2C GPIO expanders"
1066 select GPIOLIB_IRQCHIP
1069 Say yes here to provide access to most "quasi-bidirectional" I2C
1070 GPIO expanders used for additional digital outputs or inputs.
1071 Most of these parts are from NXP, though TI is a second source for
1072 some of them. Compatible models include:
1074 8 bits: pcf8574, pcf8574a, pca8574, pca8574a,
1075 pca9670, pca9672, pca9674, pca9674a,
1078 16 bits: pcf8575, pcf8575c, pca8575,
1079 pca9671, pca9673, pca9675
1081 Your board setup code will need to declare the expanders in
1082 use, and assign numbers to the GPIOs they expose. Those GPIOs
1083 can then be used from drivers and other kernel code, just like
1084 other GPIOs, but only accessible from task contexts.
1086 This driver provides an in-kernel interface to those GPIOs using
1087 platform-neutral GPIO calls.
1089 config GPIO_TPIC2810
1090 tristate "TPIC2810 8-Bit I2C GPO expander"
1092 Say yes here to enable the GPO driver for the TI TPIC2810 chip.
1094 To compile this driver as a module, choose M here: the module will
1095 be called gpio-tpic2810.
1098 tristate "Technologic Systems FPGA I2C GPIO"
1099 depends on SOC_IMX6 || COMPILE_TEST
1102 Say yes here to enabled the GPIO driver for Technologic's FPGA core.
1103 Series supported include TS-4100, TS-4900, TS-7970 and TS-7990.
1107 menu "MFD GPIO expanders"
1110 tristate "GPIO Support for ADP5520 PMIC"
1111 depends on PMIC_ADP5520
1113 This option enables support for on-chip GPIO found
1114 on Analog Devices ADP5520 PMICs.
1116 config GPIO_ALTERA_A10SR
1117 tristate "Altera Arria10 System Resource GPIO"
1118 depends on MFD_ALTERA_A10SR
1120 Driver for Arria10 Development Kit GPIO expansion which
1121 includes reads of pushbuttons and DIP switches as well
1125 tristate "Wolfson Microelectronics Arizona class devices"
1126 depends on MFD_ARIZONA
1128 Support for GPIOs on Wolfson Arizona class devices.
1131 tristate "ROHM BD70528 GPIO support"
1132 depends on MFD_ROHM_BD70528
1134 Support for GPIOs on ROHM BD70528 PMIC. There are four GPIOs
1135 available on the ROHM PMIC in total. The GPIOs can also
1136 generate interrupts.
1138 This driver can also be built as a module. If so, the module
1139 will be called gpio-bd70528.
1142 tristate "ROHM BD71815 PMIC GPIO support"
1143 depends on MFD_ROHM_BD71828
1145 Support for GPO(s) on ROHM BD71815 PMIC. There are two GPOs
1146 available on the ROHM PMIC.
1148 This driver can also be built as a module. If so, the module
1149 will be called gpio-bd71815.
1152 tristate "ROHM BD71828 GPIO support"
1153 depends on MFD_ROHM_BD71828
1155 Support for GPIOs on ROHM BD71828 PMIC. There are three GPIOs
1156 available on the ROHM PMIC in total. The GPIOs are limited to
1157 outputs only and pins must be configured to GPIO outputs by
1158 OTP. Enable this only if you want to use these pins as outputs.
1160 This driver can also be built as a module. If so, the module
1161 will be called gpio-bd71828.
1163 config GPIO_BD9571MWV
1164 tristate "ROHM BD9571 GPIO support"
1165 depends on MFD_BD9571MWV
1167 Support for GPIOs on ROHM BD9571 PMIC. There are two GPIOs
1168 available on the ROHM PMIC in total, both of which can also
1169 generate interrupts.
1171 This driver can also be built as a module. If so, the module
1172 will be called gpio-bd9571mwv.
1174 config GPIO_CRYSTAL_COVE
1175 tristate "GPIO support for Crystal Cove PMIC"
1176 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC
1177 select GPIOLIB_IRQCHIP
1179 Support for GPIO pins on Crystal Cove PMIC.
1181 Say Yes if you have a Intel SoC based tablet with Crystal Cove PMIC
1184 This driver can also be built as a module. If so, the module will be
1185 called gpio-crystalcove.
1188 tristate "AMD CS5535/CS5536 GPIO support"
1189 depends on X86 || MIPS || COMPILE_TEST
1190 depends on MFD_CS5535
1192 The AMD CS5535 and CS5536 southbridges support 28 GPIO pins that
1193 can be used for quite a number of things. The CS5535/6 is found on
1194 AMD Geode and Lemote Yeeloong devices.
1199 tristate "Dialog DA9052 GPIO"
1200 depends on PMIC_DA9052
1202 Say yes here to enable the GPIO driver for the DA9052 chip.
1205 tristate "Dialog Semiconductor DA9055 GPIO"
1206 depends on MFD_DA9055
1208 Say yes here to enable the GPIO driver for the DA9055 chip.
1210 The Dialog DA9055 PMIC chip has 3 GPIO pins that can be
1211 be controller by this driver.
1213 If driver is built as a module it will be called gpio-da9055.
1216 tristate "Diolan DLN2 GPIO support"
1218 select GPIOLIB_IRQCHIP
1221 Select this option to enable GPIO driver for the Diolan DLN2
1224 This driver can also be built as a module. If so, the module
1225 will be called gpio-dln2.
1228 bool "HTC EGPIO support"
1231 This driver supports the CPLD egpio chip present on
1232 several HTC phones. It provides basic support for input
1233 pins, output pins, and irqs.
1235 config GPIO_JANZ_TTL
1236 tristate "Janz VMOD-TTL Digital IO Module"
1237 depends on MFD_JANZ_CMODIO
1239 This enables support for the Janz VMOD-TTL Digital IO module.
1240 This driver provides support for driving the pins in output
1241 mode only. Input mode is not supported.
1244 tristate "Kontron ETX / COMexpress GPIO"
1245 depends on MFD_KEMPLD
1247 This enables support for the PLD GPIO interface on some Kontron ETX
1248 and COMexpress (ETXexpress) modules.
1250 This driver can also be built as a module. If so, the module will be
1254 tristate "TI/National Semiconductor LP3943 GPIO expander"
1255 depends on MFD_LP3943
1257 GPIO driver for LP3943 MFD.
1258 LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
1259 Open drain outputs are required for this usage.
1262 tristate "TI LP873X GPO"
1263 depends on MFD_TI_LP873X
1265 This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
1268 This driver can also be built as a module. If so, the module will be
1272 tristate "TI LP87565 GPIO"
1273 depends on MFD_TI_LP87565
1275 This driver supports the GPIO on TI Lp873565 PMICs. 3 GPIOs are present
1278 This driver can also be built as a module. If so, the module will be
1279 called gpio-lp87565.
1282 tristate "Cirrus Logic Madera class codecs"
1283 depends on PINCTRL_MADERA
1285 Support for GPIOs on Cirrus Logic Madera class codecs.
1287 config GPIO_MAX77620
1288 tristate "GPIO support for PMIC MAX77620 and MAX20024"
1289 depends on MFD_MAX77620
1290 select GPIOLIB_IRQCHIP
1292 GPIO driver for MAX77620 and MAX20024 PMIC from Maxim Semiconductor.
1293 MAX77620 PMIC has 8 pins that can be configured as GPIOs. The
1294 driver also provides interrupt support for each of the gpios.
1295 Say yes here to enable the max77620 to be used as gpio controller.
1297 config GPIO_MAX77650
1298 tristate "Maxim MAX77650/77651 GPIO support"
1299 depends on MFD_MAX77650
1301 GPIO driver for MAX77650/77651 PMIC from Maxim Semiconductor.
1302 These chips have a single pin that can be configured as GPIO.
1305 bool "TI PALMAS series PMICs GPIO"
1306 depends on MFD_PALMAS
1308 Select this option to enable GPIO driver for the TI PALMAS
1312 bool "RICOH RC5T583 GPIO"
1313 depends on MFD_RC5T583
1315 Select this option to enable GPIO driver for the Ricoh RC5T583
1317 This driver provides the support for driving/reading the gpio pins
1318 of RC5T583 device through standard gpio library.
1320 config GPIO_SL28CPLD
1321 tristate "Kontron sl28cpld GPIO support"
1322 depends on MFD_SL28CPLD || COMPILE_TEST
1324 select GPIOLIB_IRQCHIP
1327 This enables support for the GPIOs found on the Kontron sl28 CPLD.
1329 This driver can also be built as a module. If so, the module will be
1330 called gpio-sl28cpld.
1334 depends on MFD_STMPE
1336 select GPIOLIB_IRQCHIP
1338 This enables support for the GPIOs found on the STMPE I/O
1342 bool "TC3589X GPIOs"
1343 depends on MFD_TC3589X
1345 select GPIOLIB_IRQCHIP
1347 This enables support for the GPIOs found on the TC3589X
1350 config GPIO_TIMBERDALE
1351 bool "Support for timberdale GPIO IP"
1352 depends on MFD_TIMBERDALE
1354 Add support for the GPIO IP in the timberdale FPGA.
1356 config GPIO_TPS65086
1357 tristate "TI TPS65086 GPO"
1358 depends on MFD_TPS65086
1360 This driver supports the GPO on TI TPS65086x PMICs.
1362 config GPIO_TPS65218
1363 tristate "TPS65218 GPIO"
1364 depends on MFD_TPS65218
1366 Select this option to enable GPIO driver for the TPS65218
1369 config GPIO_TPS6586X
1370 bool "TPS6586X GPIO"
1371 depends on MFD_TPS6586X
1373 Select this option to enable GPIO driver for the TPS6586X
1376 config GPIO_TPS65910
1377 bool "TPS65910 GPIO"
1378 depends on MFD_TPS65910
1380 Select this option to enable GPIO driver for the TPS65910
1383 config GPIO_TPS65912
1384 tristate "TI TPS65912 GPIO"
1385 depends on MFD_TPS65912
1387 This driver supports TPS65912 gpio chip
1389 config GPIO_TPS68470
1390 bool "TPS68470 GPIO"
1391 depends on INTEL_SKL_INT3472
1393 Select this option to enable GPIO driver for the TPS68470
1395 There are 7 GPIOs and few sensor related GPIOs supported
1396 by the TPS68470. While the 7 GPIOs can be configured as
1397 input or output as appropriate, the sensor related GPIOs
1398 are "output only" GPIOs.
1400 This driver config is bool, as the GPIO functionality
1401 of the TPS68470 must be available before dependent
1405 tristate "TQ-Systems QTMX86 GPIO"
1406 depends on MFD_TQMX86 || COMPILE_TEST
1407 depends on HAS_IOPORT_MAP
1408 select GPIOLIB_IRQCHIP
1410 This driver supports GPIO on the TQMX86 IO controller.
1413 tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
1414 depends on TWL4030_CORE
1416 Say yes here to access the GPIO signals of various multi-function
1417 power management chips from Texas Instruments.
1420 tristate "TWL6040 GPO"
1421 depends on TWL6040_CORE
1423 Say yes here to access the GPO signals of twl6040
1424 audio chip from Texas Instruments.
1427 tristate "Philips UCB1400 GPIO"
1428 depends on UCB1400_CORE
1430 This enables support for the Philips UCB1400 GPIO pins.
1431 The UCB1400 is an AC97 audio codec.
1433 config GPIO_WHISKEY_COVE
1434 tristate "GPIO support for Whiskey Cove PMIC"
1435 depends on (X86 || COMPILE_TEST) && INTEL_SOC_PMIC_BXTWC
1436 select GPIOLIB_IRQCHIP
1438 Support for GPIO pins on Whiskey Cove PMIC.
1440 Say Yes if you have a Intel SoC based tablet with Whiskey Cove PMIC
1443 This driver can also be built as a module. If so, the module will be
1447 tristate "WM831x GPIOs"
1448 depends on MFD_WM831X
1450 Say yes here to access the GPIO signals of WM831x power management
1451 chips from Wolfson Microelectronics.
1454 tristate "WM8350 GPIOs"
1455 depends on MFD_WM8350
1457 Say yes here to access the GPIO signals of WM8350 power management
1458 chips from Wolfson Microelectronics.
1461 tristate "WM8994 GPIOs"
1462 depends on MFD_WM8994
1464 Say yes here to access the GPIO signals of WM8994 audio hub
1465 CODECs from Wolfson Microelectronics.
1469 menu "PCI GPIO expanders"
1473 tristate "AMD 8111 GPIO driver"
1474 depends on X86 || COMPILE_TEST
1475 depends on HAS_IOPORT_MAP
1477 The AMD 8111 south bridge contains 32 GPIO pins which can be used.
1479 Note, that usually system firmware/ACPI handles GPIO pins on their
1480 own and users might easily break their systems with uncarefull usage
1486 tristate "BT8XX GPIO abuser"
1487 depends on VIDEO_BT848=n
1489 The BT8xx frame grabber chip has 24 GPIO pins that can be abused
1490 as a cheap PCI GPIO card.
1492 This chip can be found on Miro, Hauppauge and STB TV-cards.
1494 The card needs to be physically altered for using it as a
1495 GPIO card. For more information on how to build a GPIO card
1496 from a BT8xx TV card, see the documentation file at
1497 Documentation/driver-api/gpio/bt8xxgpio.rst
1501 config GPIO_MERRIFIELD
1502 tristate "Intel Merrifield GPIO support"
1503 depends on X86_INTEL_MID
1504 select GPIOLIB_IRQCHIP
1506 Say Y here to support Intel Merrifield GPIO.
1509 tristate "Mellanox BlueField SoC GPIO"
1510 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1513 Say Y here if you want GPIO support on Mellanox BlueField SoC.
1516 tristate "Mellanox BlueField 2 SoC GPIO"
1517 depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
1520 Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.
1523 tristate "OKI SEMICONDUCTOR ML7213 IOH GPIO support"
1524 depends on X86 || COMPILE_TEST
1525 select GENERIC_IRQ_CHIP
1527 ML7213 is companion chip for Intel Atom E6xx series.
1528 This driver can be used for OKI SEMICONDUCTOR ML7213 IOH(Input/Output
1529 Hub) which is for IVI(In-Vehicle Infotainment) use.
1530 This driver can access the IOH's GPIO device.
1533 tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7223/ML7831) GPIO"
1534 depends on X86_32 || MIPS || COMPILE_TEST
1535 select GENERIC_IRQ_CHIP
1537 This driver is for PCH(Platform controller Hub) GPIO of Intel Topcliff
1538 which is an IOH(Input/Output Hub) for x86 embedded processor.
1539 This driver can access PCH GPIO device.
1541 This driver also can be used for LAPIS Semiconductor IOH(Input/
1542 Output Hub), ML7223 and ML7831.
1543 ML7223 IOH is for MP(Media Phone) use.
1544 ML7831 IOH is for general purpose use.
1545 ML7223/ML7831 is companion chip for Intel Atom E6xx series.
1546 ML7223/ML7831 is completely compatible for Intel EG20T PCH.
1548 config GPIO_PCI_IDIO_16
1549 tristate "ACCES PCI-IDIO-16 GPIO support"
1550 select GPIOLIB_IRQCHIP
1552 Enables GPIO support for the ACCES PCI-IDIO-16. An interrupt is
1553 generated when any of the inputs change state (low to high or high to
1554 low). Input filter control is not supported by this driver, and the
1555 input filters are deactivated by this driver.
1557 config GPIO_PCIE_IDIO_24
1558 tristate "ACCES PCIe-IDIO-24 GPIO support"
1559 select GPIOLIB_IRQCHIP
1561 Enables GPIO support for the ACCES PCIe-IDIO-24 family (PCIe-IDIO-24,
1562 PCIe-IDI-24, PCIe-IDO-24, PCIe-IDIO-12). An interrupt is generated
1563 when any of the inputs change state (low to high or high to low).
1564 Input filter control is not supported by this driver, and the input
1565 filters are deactivated by this driver.
1568 tristate "RDC R-321x GPIO support"
1572 Support for the RDC R321x SoC GPIOs over southbridge
1573 PCI configuration space.
1575 config GPIO_SODAVILLE
1576 bool "Intel Sodaville GPIO support"
1577 depends on X86 && OF
1579 select GENERIC_IRQ_CHIP
1581 Say Y here to support Intel Sodaville GPIO.
1585 menu "SPI GPIO expanders"
1586 depends on SPI_MASTER
1589 tristate "74x164 serial-in/parallel-out 8-bits shift register"
1592 Driver for 74x164 compatible serial-in/parallel-out 8-outputs
1593 shift registers. This driver can be used to provide access
1594 to more gpio outputs.
1596 config GPIO_MAX3191X
1597 tristate "Maxim MAX3191x industrial serializer"
1600 GPIO driver for Maxim MAX31910, MAX31911, MAX31912, MAX31913,
1601 MAX31953 and MAX31963 industrial serializer, a daisy-chainable
1602 chip to make 8 digital 24V inputs available via SPI. Supports
1603 CRC checksums to guard against electromagnetic interference,
1604 as well as undervoltage and overtemperature detection.
1607 tristate "Maxim MAX7301 GPIO expander"
1610 GPIO driver for Maxim MAX7301 SPI-based GPIO expander.
1613 tristate "Freescale MC33880 high-side/low-side switch"
1615 SPI driver for Freescale MC33880 high-side/low-side switch.
1616 This provides GPIO interface supporting inputs and outputs.
1619 tristate "Generic parallel-in/serial-out shift register"
1621 GPIO driver for SPI compatible parallel-in/serial-out shift
1622 registers. These are input only devices.
1625 tristate "EXAR XRA1403 16-bit GPIO expander"
1628 GPIO driver for EXAR XRA1403 16-bit SPI-based GPIO expander.
1631 tristate "Turris Mox Moxtet bus GPIO expander"
1634 Say yes here if you are building for the Turris Mox router.
1635 This is the driver needed for configuring the GPIOs via the Moxtet
1636 bus. For example the Mox module with SFP cage needs this driver
1637 so that phylink can use corresponding GPIOs.
1641 menu "USB GPIO expanders"
1644 config GPIO_VIPERBOARD
1645 tristate "Viperboard GPIO a & b support"
1646 depends on MFD_VIPERBOARD
1648 Say yes here to access the GPIO signals of Nano River
1649 Technologies Viperboard. There are two GPIO chips on the
1650 board: gpioa and gpiob.
1651 See viperboard API specification and Nano
1652 River Tech's viperboard.h for detailed meaning
1653 of the module parameters.
1657 menu "Virtual GPIO drivers"
1659 config GPIO_AGGREGATOR
1660 tristate "GPIO Aggregator"
1662 Say yes here to enable the GPIO Aggregator, which provides a way to
1663 aggregate existing GPIO lines into a new virtual GPIO chip.
1664 This can serve the following purposes:
1665 - Assign permissions for a collection of GPIO lines to a user,
1666 - Export a collection of GPIO lines to a virtual machine,
1667 - Provide a generic driver for a GPIO-operated device in an
1668 industrial control context, to be operated from userspace using
1669 the GPIO chardev interface.
1672 tristate "GPIO Testing Driver"
1675 This enables GPIO Testing driver, which provides a way to test GPIO
1676 subsystem through sysfs (or char device) and debugfs.
1677 User could use it through the script in
1678 tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
1682 tristate "VirtIO GPIO support"
1685 Say Y here to enable guest support for virtio-based GPIO controllers.
1687 These virtual GPIOs can be routed to real GPIOs or attached to
1688 simulators on the host (like QEMU).